OpenE2K/qemu-e2k
13
4
Fork 0
Code Issues 4 Pull Requests Projects 2 Releases Activity

linux-user/hppa: Fix setup_sigcontext()

Browse Source 
We don't emulate a preemptive kernel on this level, and the hppa architecture
doesn't allow context switches on the gateway page. So we always have to return
to sc_iaoq[] and not to gr[31].
This fixes the remaining random segfaults which still occured.

Signed-off-by: Helge Deller <deller@gmx.de>
Message-Id: <20220924114501.21767-8-deller@gmx.de>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This commit is contained in:
Helge Deller 2022-09-24 13:45:01 +02:00 committed by Laurent Vivier
parent 4c184e70ad
commit 2319a53758
1 changed files with 3 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
linux-user/hppa/signal.c
View File

@ -49,23 +49,13 @@ struct target_rt_sigframe {
static void setup_sigcontext(struct target_sigcontext *sc, CPUArchState *env)
{
int flags = 0;
int i;
/* ??? if on_sig_stack, flags |= 1 (PARISC_SC_FLAG_ONSTACK). */
if (env->iaoq_f < TARGET_PAGE_SIZE) {
/* In the gateway page, executing a syscall. */
flags |= 2; /* PARISC_SC_FLAG_IN_SYSCALL */
__put_user(env->gr[31], &sc->sc_iaoq[0]);
__put_user(env->gr[31] + 4, &sc->sc_iaoq[1]);
} else {
__put_user(env->iaoq_f, &sc->sc_iaoq[0]);
__put_user(env->iaoq_b, &sc->sc_iaoq[1]);
}
__put_user(env->iaoq_f, &sc->sc_iaoq[0]);
__put_user(env->iaoq_b, &sc->sc_iaoq[1]);
__put_user(0, &sc->sc_iasq[0]);
__put_user(0, &sc->sc_iasq[1]);
__put_user(flags, &sc->sc_flags);
__put_user(0, &sc->sc_flags);
__put_user(cpu_hppa_get_psw(env), &sc->sc_gr[0]);
for (i = 1; i < 32; ++i) {